diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index 57607ea..a272dc7 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -313,6 +313,12 @@
          Must be in the range specified by minimum and maximum. -->
     <item type="dimen" name="config_screenBrightnessSettingDefaultFloat">0.44313726</item>
 
+    <!-- Maximum screen brightness allowed by the power manager.
+         -2 is invalid so setting will resort to int value specified above.
+         Set this to 1.0 for maximum brightness range.
+         The user is forbidden from setting the brightness above this level. -->
+    <item type="dimen" name="config_screenBrightnessSettingMaximumFloat">1.0</item>
+
     <!-- Minimum screen brightness setting allowed by power manager.
          -2 is invalid so setting will resort to int value specified above.
          Set this to 0.0 to allow screen to go to minimal brightness.